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CREDIT DISCLSOURES - Narrative and Additional Information (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Percentage of specific allowance for losses | 100.00% |
Maturity period of fixed rate loans | 30 years |
Annual cap of ARM loans | 2.00% |
Lifetime cap of ARM loans | 6.00% |
Total past due | $ 50,666,000 | $ 3,226,000
1-4 Family Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maturity period of loans receivable | 30 years |
Total past due | $ 101,000 | 30,000
Commercial and Multi-Family Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan to value ratio | 80.00% |
Maturity period of fixed rate loans | 20 years |
Total past due | $ 3,179,000 | 0
Commercial Operating [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total past due | $ 0 | 505,000
Agricultural Operating [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maturity period of loans receivable | 1 year |
Total past due | $ 0 | 0
Agricultural Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total past due | $ 35,058,000 | 0
Consumer Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maturity period of fixed rate loans | 5 years |
Total past due | $ 9,622,000 | 53,000
Premium Finance [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Period of delay or shortfall in payments after which a loan is evaluated for impairment | 210 days |
Typical period of delinquency | 210 days |
Total past due | $ 2,706,000 | $ 2,638,000
Non-Premium Finance Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Period of delay or shortfall in payments after which a loan is evaluated for impairment | 90 days |
Typical period of delinquency | 90 days |
Maximum [Member] | 1-4 Family Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan to value ratio | 100.00% |
Exposure of the entity expressed in loan to value ratio | 80.00% |
Maximum [Member] | Commercial and Multi-Family Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maturity period of loans receivable | 1 year |
Percentage value for securing the loan | 80.00% |
Maximum [Member] | Commercial Operating [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maturity period of loans receivable | 1 year |
Maximum [Member] | Agricultural Operating [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maturity period of fixed rate loans | 7 years |
Maximum [Member] | Agricultural Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maturity period of fixed rate loans | 10 years |
Period of amortization, loans | 25 years |
Percentage value for securing the loan | 75.00% |
Maximum [Member] | Consumer Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Percentage value for securing the loan | 90.00% |
Maximum [Member] | Automobile Loan [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maturity period of loans receivable | 60 months |
Percentage value for securing the loan | 80.00% |
Maximum [Member] | Premium Finance [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Percentage of down payment | 25.00% |
Period of finance | 10 months |
Period of conversion of collateral into cash | 210 days |
Minimum [Member] | Agricultural Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Maturity period of fixed rate loans | 5 years |
Period of amortization, loans | 20 years |
Minimum [Member] | Premium Finance [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Percentage of down payment | 20.00% |
Period of finance | 9 months |
Period of conversion of collateral into cash | 60 days |
Typical period of delinquency | 90 days |
Financing Receivables, Equal to Greater than 210 Days Past Due [Member] | Premium Finance [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total past due | $ 0 |

X
- Definition A clause stipulated in the contract of an adjustable-rate mortgage (ARM) that limits the possible increase in the loan's interest rate to a certain amount each year. The cap is usually defined in terms of rate, but the dollar amount of the principal and interest payment can be capped as well. Annual caps are designed to protect borrowers against a sudden and excessive increase in the amount of their monthly payments when rates rise sharply over a short period of time. + References No definition available. + Details
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Period Type: | duration

X
- Definition This item refers to entity's exposure expressed in loan-to-value ratio used as a limit for obtaining private mortgage insurance. + References No definition available. + Details
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X
- Definition Represents an adjustable rate that limits the possible increase in the loan's interest rate to a certain amount over lifetime of the contract. The cap is usually defined in terms of rate, but the dollar amount of the principal and interest payment can be capped as well. These caps (limits) are designed to protect borrowers against a sudden and excessive increase in the amount of their periodic payments when rates rise sharply over a short period of time. + References No definition available. + Details
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Period Type: | duration

X
- Definition Refers to a lending risk assessment ratio that financial institutions and others lenders examine before approving a mortgage. Typically, assessments with high LTV ratios are generally seen as higher risk. + References No definition available. + Details
Name: | cash_LoanToValueRatio
Namespace Prefix: | cash_
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- Definition Represents the maturity period of loans originated with fixed-rate interest payment terms. + References No definition available. + Details
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Namespace Prefix: | cash_
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Balance Type: | na
Period Type: | duration

X
- Definition This item represents the period of maturity of the loans originated by the entity. + References No definition available. + Details
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Balance Type: | na
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X
- Definition Refers to the down payment to the insurance broker. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

X
- Definition Refers to the percentage of specific allowance for loan losses specifically for those assets which have been classified as "loss". + References No definition available. + Details
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Period Type: | duration

X
- Definition Reflects the percentage of the total value of the collateral securing the loan(s). + References No definition available. + Details
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- Definition Refers to amortization period of loans. + References No definition available. + Details
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- Definition Refers to the period of conversion of collateral into cash. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Refers to the period of delay or shortfall in payments after which a loan is evaluated for impairment. + References No definition available. + Details
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- Definition Refers to the period of finance for loans. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Refers to the typical period of delinquency of receivables. + References No definition available. + Details
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Balance Type: | na
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953401-111524 + Details
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- Details
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